Electric radiator.



J. D. ROSS.

ELECTRIC RADIATOR.

, APPLICATION FILED SEPT.30. 1914.

1,1 58,724. Patented Nov. 2, 1915.

M M X nn rnn STATES PA ENT onrion.

JOHN D. 3088,01? PORTLAND, MAINE, essreivon, 'BY mnncirnnn mEsNn ASSIGN- MENTS, T ELECTRICAL STEAM RADIATOR '00., or PORTLAND, MAINE, A COBPOBA-V TION OF MATNE. i

ELECTRIC RADIATOR:

A To alfwho'm it may mam;-

'andof their combination.

' vation partly in section t Be it known that 1, JOHN D. Ross, a citizen of the United States, residing at Portland,-in the county of Cumberland and State of Maine, haveinventedcertain new and useful Improvements inElectric Radiators, of'w hic h the following is a specification.

The object of the present invention is to provide .an electric heating radiator which ntaiy be used wherever necessary or a ei Applicants device isdesigned to" obtain the maximumof heat fromthe consumption of a minimum amount of electricity. This desirhe accomplishes by the specialconstruction of the radiator, of the electric heating device The drawing consisting of one figure, which has been chosen to illustrate the preferred form of the invention,;is aside ele- In saiddrawing A s a series of radiator sections provided at the bottom with alined openings B which form a water way between 1 v 25 the. radiator sections. 1

are provided with threaded collars C adapted to receive the threaded nuts D and E, respectivelyl The. nut E carries a tube F,y preferably in threaded engagement there-i with and extending through said water way and terminating close to the innerend of l The nut D carries a tube I within and con nut D or, as shown, in a circular-recess G in the inner end of nutD. The tube Fha's preferably in the lower side 'near'the'inner end thereof one or more ports H adapted to admit water from the water way to the chamber between said inner and outer tubes.

centric with tube F. ,In tube I is an electric heater J of any suitable construction.

Leading out of tube F is a pipe K which returns into the top of the radiator, as shown.

This pipe may be made in sections and provided with a shut-ofi L. lhe radiator is p ovided with a steam operated regulator M of any desired construction.

r The operation of the radiatortisas follows: The radiator issupplied with a liquid to any desired height, which *freely sur-" 'rounds the tube F and passes throughgports e outer sections H into the narrow chamber between tube F and tube J, thus bringing-only 'acomparatively thin film of the liquid .in contact with the surface of the tube J which carries the heater, which limited-quantity of the liquid- I Specification oi Letters Patent, 'Patented Nov 2 1915, Application filed September $0, 1914. Serial No. 864,203. i i

becomes quickly heated. When heated the liquid or steam passes out through pipe K 'intothe top of theradiato'r. As the liquid gives out its heat by radiation from the outside of the radiator sections, it descends through ports H into chamber J, thus providing a continuous circulation. The thin film ofliquid in the chamber between the eoncentrictubes is very quickly heated with the least possible consumption of electricity.

again to the bottom 'of the radiator and. 4

The radiator sections become heated in the according to the amount of liquid used and the degree of heat required. When used for steam, the steam generated in the chamber between the concentric tubes passes through the circulation pipe into the radiator where "it condenses and returns to the bottom and again passes into thechamber between the concentric tubes, as before described. I'claimi 1 F 1. An electric radiator comprising ZLJSB? ries of radiator sections with alined communicating openings at the bottom thereof, two

concentric tubes said alined openings, the outer tube,being provided with an intake at one end and at the other end with a circulation pipe leadingsto the top of the radiator, and an electric heater located in said inner tube. v

2; An electric radiator comprising a series of radiator sections having alined communicating openings in the bottom thereof, threaded nuts adapted'to close said openings at the ends of the radiator, concentric tubes in said alined openings supported by said nuts, the outer tube being provided ;with an intake near the end and with a circulation pipe leading from the other end to \the top of the. radiator andthe innertube closed to ,the radiator sections and provided with an electric heater.

3. In an electric heater, a liquid container, In testimony whereof I aflix my signature two concentric tubes located therein, the\out-- in prese'nce"of two Witnesses. side tube'being provided with ports leading y J OHN D. ROSS. to the container and the inner tube closed to Witnesses: 5 the container and an electric heater located ELGIN v G. VERRILL,

in said inner tube. a x f CHARLfis FOSTER, 

